Cast history of a failure of a gas turbine with a floating sleeve bearing

摘要

The paper presents a case history of failure of a gas turbine, which was manifested in high vibration, loud noise, and, eventually, damaged parts, such as impellers, bearings, and probes were discovered. The turbine features a bearing with floating sleeve design, originally intended to reduce lubricant relative speeds within the bearing (that is, decreasing journal to bearing speed gradient throughout the lubricant circumferential flow, breaking the flow in two sections, at both surfaces of the floating sleeve).